Russian billionaire Roman Abramovich new yacht Eclipse is the largest in the world. It features lasers that disrupt cameras pointed at it and missile defense system to ward off attack:

Even the precise length of the vessel has been kept secret, though it is thought to be about 16ft longer than the previous record holder, the 532ft yacht Dubai, owned by Sheikh Mohammed bin Rashid al-Maktoum. It has been built by Blohm & Voss — the shipyard in Hamburg that constructed the German battleship Bismarck.

The Eclipse is said to have two helipads, two swimming pools — the larger of which converts into a dance floor when drained — bullet-proof glass, 6ft home cinema screens in every guest cabin and a master cabin where the roof opens to allow Abramovich and his girlfriend Daria Zhukova to sleep under the stars. An anti-paparazzi electronic “shield” will take care of their privacy while on board.